Cracks in the skin round the heel is usually both embarrassing and painful. This problem is caused by the thick or dry skin, on and round the edges of the heels. The skin on your feet will likely be more dry and dehydrated in comparison to the skin in other places on the rest of the body most likely as there are no sebaceous glands in the thicker epidermis on the bottom of the feet. Due to this, the skin around the heels can lose suppleness and elasticity because of that loss of moisture. As a result of the loads of weightbearing, that dry skin will start to crack and it can result in unsightly, painful cracked heels which can occasionally bleed. There are a number of factors which raise the risk for the cracked heels such as higher loads, greater weight, inappropriate shoes (particularly footwear that are open at the back), genetics, unhygienic problems and poor self-care, as well as nutritional inadequacies.
To prevent cracked heels, always attempt to wear properly fitted enclosed footwear that enable the feet to breathe and get away from shoes that are open at the back. It is important to remain well hydrated by consuming at least two litres of water per day as that can help. Exfoliate the skin on a regular basis and moisturise daily with a decent ointment. If it is more severe, this probably should be done twice daily at first. There are many suggestions that omega-3 and zinc dietary supplements could help (however they really do need to be used with all the other treatment options and not on there own). It will also help to avoid too much exposure of the foot to water or moist conditions. It is necessary that you wash your feet with tepid to warm water rather than hot water. If these kinds of strategies tend not to help, then see a experienced podiatrist. They can get rid of the thicker hard skin and provide additional suggestions about how you can self treat.